Generates only two blocks: one for the visible lines
and one for the hidden lines of the entire selection set. When you
generate hidden lines, solids can partially or completely hide other solids.
The visible profile block is drawn in the BYLAYER linetype, and
the hidden profile block is drawn in the HIDDEN linetype (if loaded). The
visible and hidden profile blocks are placed on uniquely named layers
using the following naming conventions:





PV-viewport
handle for the visible profile layer





PH-viewport
handle for the hidden profile layer





For
example, if you create a profile in a viewport whose handle is 4B,
the blocks containing the visible lines are inserted on layer PV-4B,
and the block containing the hidden lines (if requested) is inserted
on layer PH-4B. If these layers do not exist, the command creates
them. If the layers do exist, the blocks are added to the information already
on the layers.

Treats
all profile lines as visible lines and creates a block for the profile
lines of each selected solid. All profile lines for each solid in
the selection set are generated, even if a solid is partially or
completely obscured by another solid. The visible profile blocks
are drawn in the same linetype as the original solid and placed
on a uniquely named layer using the naming convention described
under the Yes option.